title: New triterpenoid acyl derivatives and biological study of Manilkara zapota (L.) Van Royen fruits.
abstract: β-amyrin-3-(3'-dimethyl) butyrate, a new natural compound was isolated from the fruits of Manilkara zapota (L.) Van Royen, in addition to lupeol-3-acetate and 4-caffeoylquinic acid (cryptochlorogenic acid). The structures of these compounds were identified using different spectral methods (IR, MS, UV, (1)H-NMR, (13)C-NMR and 2D-NMR). The alcoholic and aqueous extracts of the unripe fruits, in addition to their aqueous homogenate exhibited antioxidant, antihyperglycemic and hypocholesterolemic activities.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt.
authors.forename: Nesrin M
authors.initials: NM
authors.lastname: Fayek
authors.forename: Azza R Abdel
authors.initials: AR
authors.lastname: Monem
authors.forename: Mohamed Y
authors.initials: MY
authors.lastname: Mossa
authors.forename: Meselhy R
authors.initials: MR
authors.lastname: Meselhy
keywords: 4-caffeoylquinic acid; Manilkara zapota; antihyperglycemic; antioxidant; hypocholesterolemic; lupeol-3-acetate; β-amyrin-3-(3’-dimethyl)butyrate